Steam-boiler furnace.



No.1723,54]- PATENTED MAR. 24, 1903.

J.'F. MOGK.

STEAM BOILER FURNACE.

APPLIGATION FILED mm: 2a, 1902.

2 smug-SHEET 1.

NO MODEL.

PATENTED MAR. 24, 1903.

' J. F. MOGK.

STEAM BOILER FURNACE.

APPLIOATION FILED JUNE 23, 1902.

2 SHEETS-SHEET 2- no MODEL.

ancenfoz UNITED STATES;

PATENT Grrrce.

JOHN F. MOCK, OF PHILADELPHIA, PENNSYLVANIA.

STEAM-BOILER FURNACE.

SPECIFICATION forming part of Letters Patent N 0. 723,541, dated March 24, 1903.

Application filed June 23,1902.

To all whmn it may concern:

Be it known that I, JOHN F. MOOK, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Steam-Boiler Furnaces, of which the following is a specification. 7

This invention relates to furnaces designed more particularly for steam-boilers, the chief object being to prevent the giving 0E of free carbon when soft coal-is used as fuel, thereby economizing in the consumption of fuel and obviating the objectionable features commonly resulting from the consumption of soft coal in furnaces for generating steam and heating generally.

For a full description of the invention and the merits thereof and also to acquire a knowledge of the details of constructionof the means for efiecting the result reference is to be had to the following description and drawings hereto attached.

While the essential and characteristic features of the invention are susceptible of modification, still the preferred embodiment of the invention is illustrated in the accompanying drawings, in which- Figure 1 is a vertical central longitudinal section of a steam-boiler furnace embodying the invention. Fig. 2 is a plan section thereof about on the line X X of Fig. 1. Fig. 3 is a transverse section on the line Y Y of Fig. 1 looking to the right. Fig. 4 is a section similar to Fig. 3 on the line Z Z of Fig. 1 looking to the right.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

The furnace comprises a magazine 1, fire chamber 2, ash-pit 3, and combustion-chamber 4, the latter being separated from the magazine by a pendent hollow bridge 5, havin g its face in communicationwit-h the waterspace of the tubular boiler 6, which maybe of any make and secured to the furnace in the accustomed way. The grate 7 inclines downwardly and rearwardly from the front of the furnace and subdivides the ash-pit 3 from the fire and combustion chambers. The grate is composed of a series of tubular fuel- $erial No. 112,897. (No model.)

bars connected at their front ends to a header 8 and having their rear ends let into the inner plate of the rear hollow wall 9, whose space is in communication with the water-space of I means of a door 11 and to the ash-pit by means of a door 12.

The magazine 1 is located near the front of the furnace and is closed by a door 13, and its lower end is contracted, this being effected by having the front wall of the magazine inclined rearwardly at its lower end,"forming a space 14 between it and the front wall of the furnace, said space being in communication with the hollow walls 10. The fuel is coked and green coal is prevented from coming in direct contact with the fire. Hence opportunity is afforded for consumption of the gases and carbon and the same prevented from escaping and creating the objectionable features urged against the use of soft coal in furnaces as generally constructed.

The combustion-chamber 4 is located at the rear end of the furnace, and its upper portion is in communication with the fire-tubesofthe boiler 6. A tile or fire-brick 15 is placed against the lower portion of the rear wall of the combustion-chamber and is supported by means of a pipe 16, having its end portions let into inner plates of the hollow side walls 10 and in communication with the waterspace of said walls, whereby a circulation of water through the pipe 16 is assured. A tile or fire-brick 17 is similarly applied to the lower portion of the front wall of the combustion-chamber and is supported upon a pipe 18, supported at its ends by the hollow walls 10 and in communication therewithJ These tiles or fire-bricks 15 and 17 are heated, and the smoke and gases coming in contact therewith have the free carbon consumed, the combustion being further promoted by a jet of steam and air injected into the combustionchamber by means of a nozzle or twyer 19,

let into a side wall 10, as shown most clearly in Figs. 2 and 3. The steam is supplied to the nozzle 19 by means of a pipe 20, having connection with the dome or steam-space of the boiler 6, as shown most clearly in Fig. 1. The outer casing of the nozzle or twyer is provided near its inner end with a wire-gauze 21 to divide the inflowing air into small jets, which is sprayed into the combustion-chamber and is better adapted to commingle with the smoke and gases and assist combustion thereof.

The air is supplied to the fire through the grate from the ash-pit, and the smoke and gases liberated from the coal are carried into the combustion-chamber 4 beneath the pendent bridge 5 and coming in contact with the heated fire-bricks 15 and 17 and with the inflowing steam and air have the free carbon consumed, thereby overcoming the objection urged against the continued use of soft coal as fuel in cities and communities.

Having thus described the invention, what is claimed as new is= In a furnace having hollow rear and side walls, a downwardly and rearwardly inclined grate composed of tubular-bars in communication with the hollow walls of the furnace, a magazine at the front end of the furnace, a combustion-chamber at the rear end of the furnace, a hollow pendent bridge-wall separating the combustion -chamber from the magazine and in communication with the hollow side walls of the furnace, fire-bricks applied to the lower portion of the front and rear walls of the combustion-chamber, pipes supporting said fire-brick and in communication with the hollow side walls, and a twyer for delivering a blast of steam and air into the combustion 7 chamber, substantially as specified.

In testimony whereof I afiix my signature in presence of two witnesses.

JOHN F. MOOK.

Witnesses:

I. E. ROBERTS, W. J .FENN. 

